# 0_0 The Great Marsh is vast!
How vast is it, you ask?
Take a look from the Observatory
and you can see for yourself!
# 0_1 Pastoria’s Great Marsh was once
a part of the sea.
The seawater drained away over time,
leaving the huge marshland.
That’s why they say there are rare
Pokémon that you can only see here.